Tags: Horse Race, Race.
The Pennsylvania Derby is a race for thoroughbred horses run at Parx Racing and Casino (formerly known as Keystone Race Track then from 1986 through 2010 as Philadelphia Park) each year. The track’s premiere event is open to horses age three willing to race 1.125 miles (1.811 km) (9 furlongs) on the dirt and as of 2007 offers a purse of $1 million.The Pennsylvania Derby began on Memorial Day in 1979 and achieved Graded status in 1981.